from app import db
from werkzeug.security import generate_password_hash,check_password_hash
from time import  time
from datetime import  datetime
from  flask_login import  UserMixin
from app import  login

class User(UserMixin,db.Model):
    __tablename__ = 'user'
    id = db.Column(db.Integer,primary_key=True)
    username = db.Column(db.String(64),index=True,unique=True)
    email = db.Column(db.String(120),index=True,unique=True)
    password_hash = db.Column(db.String(128))
    regtime=db.Column(db.DateTime,default=datetime.utcnow)
    posts=db.relationship('Post',backref='author',lazy='dynamic')

    def __repr__(self):
        return '<用户名:{}>'.format(self.username)
    def set_password(self,password):
        self.password_hash=generate_password_hash(password)
    def check_password(self,password):
        return check_password_hash(self.password_hash,password)

    @login.user_loader
    def load_user(id):
        return User.query.get(int(id))
class Post(db.Model):
    __tablename__ = 'post'
    id = db.Column(db.Integer,primary_key=True)
    body = db.Column(db.String(140))
    timestamp = db.Column(db.DateTime,index=True,default=datetime.utcnow)
    user_id = db .Column(db.Integer,db.ForeignKey('user.id'))

    def __repr__(self):
        return '<Post {}>'.format(self.body)